There aren't too many left that you haven't already listed.
There is Akershus if you wanted another princess meal.
Garden Grill in EPCOT has a character dinner with Chip, Dale, Farmer Mickey and Pluto that also revolves around some scenes from Living with the Land, you also don't have any meals with Chip and Dale so that might be an option. I'm not personally too fond of the food, but it does have some of the best character interaction on property. The characters may pass by your table 3 or 4 times. It also tends to be quieter than most other character meals.
As a PP mentioned, there is also Cape May Cafe that has Minnie, Goofy and Donald in their beach outfits. The only problem is that if you aren't staying in the EC resort area (BC/YC, BWI, Swan, Dolphin) it can be a pain to get to for an early morning ADR. The fastest way would be by either driving yourself or taxi, but to use Disney transportation you would have to take a bus to DHS and then take the boat from DHS to BC, so getting from resort to resort can take a while. The breakfast is good and is not as crazy as some of the other character meals.
Also, which 1900 PF do you have, breakfast or dinner? The characters are different at both meals, so you could have both planned and get different character meals experiences.
